为了使发动机处于最佳工作状态,发动机冷却液的正常工作温度应控制在85~95℃。如冷却液温度过高不仅使发动机的动力性和经济性下降,更严重的将导致发动机机件损坏,发生重大机械事故;冷却液温度过低,则发动机的经济性下降,机械磨损增加。发动机既怕冷更怕热,与人体一样必须保持正常的温度才能正常运转。 In order to make the engine in the best working condition, the normal operating temperature of the engine coolant should be controlled at 85 ~ 95 ℃. Such as the coolant temperature is too high not only make the engine power and economic decline, the more serious will lead to engine parts damage, a major mechanical accident; coolant temperature is too low, the economy of the engine decreases, increased mechanical wear. As long as the engine is hot and afraid of the cold, it must maintain the normal temperature just like the human body can operate normally.